High-pressure vapor-liquid equilbria of some carbon dioxide plus organic binary systems

Vapor-liquid equilibria, molar volumes, and volume expansion for several binary mixtures of organic solvents with carbon dioxide have been determined using a visual synthetic technique at temperatures from (298 to 333) K. The binary vapor-liquid equilibrium and saturated liquid molar volume of CO2 + acetone, + acetonitrile, + dichloromethane, + nitromethane, + N-methyl-2-pyrrolidone, + perfluorohexane, + 2-propanol, + tetrahydrofuran, + toluene, and + 2,2,2-trifluoroethanol were measured at temperatures from (298.2 to 333.2) K. The VLE correlated well using the Patel-Teja equation of state with Mathias-Klotz-Prausnitz mixing rules. The solubility of CO2 in the various solvents is explained by considering the intermolecular interactions Of CO2 in solution.